I would go with a sump. Heck with buying a way over priced wet dry. Make your own for less than half the price, including the pump. All you need is 2- 1 1/4" standpipes in your boxes, some adapters and fittings, 3/4" tubing for returns, a tank that holds about 30 gals., Eheim 1260 pump, pre filter, and bio media. There is no need at all to get fancy and make little individual compartments for this and that. All I use is a micron bag to act as a pre filter. The water then runs over the bio media in an elevated basket in the sump. The water then drains to the bottom of the sump, and is pumped back into the tank. I have a 240 gal., and two 125 gal. tanks using this style setup for years without a single problem. I just K.I.S.S. (Keep it simple stupid)